add cache and rename some files

[.]local/share/nvim/mason/packages/lua-language-server/libexec/script/version.lua

@@ -0,0 +1,30 @@
+local fsu = require 'fs-utility'
+
+local function loadVersion()
+    local changelog = fsu.loadFile(ROOT / 'changelog.md')
+    if not changelog then
+        return
+    end
+
+    local version, pos = changelog:match '%#%# (%d+%.%d+%.%d+)()'
+    if not version then
+        return
+    end
+
+    if not changelog:find('^[\r\n]+`', pos) then
+        version = version .. '-dev'
+    end
+    return version
+end
+
+local m = {}
+
+function m.getVersion()
+    if not m.version then
+        m.version = loadVersion() or '<Unknown>'
+    end
+
+    return m.version
+end
+
+return m